<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link rel="stylesheet" href="./css/index.css" />
  </head>

  <body>
    <div class="container">
      <ul class="top">
        <!-- 基础模板 -->
        <!-- <li>
        <a href="javascript:;">首页</a>
        <ul class="sub">
          <li>
            <a href="javascript:;">
              <span>砂锅厨具</span>
              <img src="https://yanxuan.nosdn.127.net/3102b963e7a3c74b9d2ae90e4380da65.png?quality=95&imageView" alt="">
            </a>
          </li>
        </ul>
      </li> -->
      </ul>
    </div>
    <script src="./axios.js"></script>
    <!-- <script src="./index.js"></script> -->
    <script src="../async.inde.js"></script>
    <script>
      // 基地址
      axios.defaults.baseURL = 'http://ajax-api.itheima.net';
      // 获取元素
      const list = document.querySelector('.top')

      // 发一级请求
      axios({
        url:'/api/category/top',
        method:'GET',
      })
      .then(({data : res}) =>{
        // 二级请求
        const newArr = res.data.map((item) =>{
          return axios({
          url:'/api/category/sub?id=' + item.id,
          method:'GET',
        })
      })
        return Promise.all(newArr)
        
      })
      .then((res)=>{
        // 渲染页面
        const html = res
        .map(({ data: item }) => {
              console.log(item)
              return `
               <li>
                 <a href="javascript:;">${item.data.name}</a>
                  <img src="${item.data.picture}" alt="">
                 <ul class="sub">
                 ${item.data.children
                   .map((item) => {
                     return `
                   <li>
                   <a href="javascript:;">
                     <span>${item.name}</span>
                     <img src="${item.picture}" alt="">
                   </a>
                 </li>
                   `
                   })
                   .join('')}
                 </ul>
               </li>
            `
            })
        .join('')

        list.innerHTML = html
      })
      
    </script>
  </body>
</html>
